Strainer.



U L. RAYFIELD'.

STRAINER.

APPLICATION FILED AuG.3 0. 19x1.

Patented Nov. 16, 1915.

6/160 esl. figyfz e1 trap therefor CHARLES L. RAYFIELD, OF CHICAGO, ILLINOIS.

STRAINER.

1.1. titlalifiifl.

Application filed August :30, 1911. Serial No. 648,818.

To all whom it mu can er/t.

Be it known that .l. (lunches L. RAY- rumo, a citizen of the United States, and a resident of the city of (hicago, county of Cook. and State of Illinois, have invented certain new and useful Improvements in Strainers: and l do hereby declare that the following a full, clear, and exact description of the same, reference being had to the accompanying" drawings, and to the numbers of reference marked thereon, which form 2 part of this specification.

'lhis invention relates more particularly to strainers for fluid circulating systems; for example, the gasolene supply pipe leading from the gasolene tank of the carburetor of a gasolenc engine.

A very small amount of dirt finding its way into a carburetor, will clog the same suliiciently to either shut off the supply altogelhcr. or to such an extent as to seriously afiect the operation and reliability of the engine until the dirt is removed. Frequently also, a small quantity of water is contained in the, gasolene, and this also reaching the carburetor, causes stoppage, or irregular working of the engine or motor.

The object of this invention is to alford a strainer of such a construction as to exclude oil, dirt, and refuse from the supply line to the carburetor, and to afford a receptacle or to collect the same below the normal flow of gasolene.

it is also an object of the invention to a ford a construction in which water may be separated from the rasolcne and the 5asolene only permitted to flow to the carbu reter.

It is an important object of the invention to afford a suliicicntly large collecting chan'iber for water or refuse below the normal flow of the gasolene, to avoid any disturbance of the contents near the bottom of the receptacle by the flow of the gasolene therethrough.

Finally it an object of the invention to afford av construction of the class described, provided with a discharge or Waste cock permitting-the collecting chamber to be drained or discharged from time to time, and obviating the necessity of disconnecting from the gasolene feed pipe for the purpose of cleaning".

The invention consists in the matters hereinafter described and more fully pointed out and defined in the appended claims.

I Specification of Letters Patent.

Patented Nov. flti, ii 3M5.

In the drawings: Figure 1 is a central vertical section of a preferred form of a device embodying my invention. Fig. 2 is a view in elevation thereof. Fig. 3 is an enlarged bottom plan view of the strainer, showingthe same removed from its casing. Fig. l is a fragmentary vertical section thereof.

As shown in the drawings: A. casing is constructed of cast or any suitable metal or material conn'n'ising an upper cylindric bored portion. 1, and a lower portion 2, providing therein a globular or enlarged settlingand collecting chamber or trap. EX- tending downwardly from the bottom. of said lower portion 2, of the casing is a cylindric boss 3, having an aperture or passage 4, therein, in which is threaded a waste cock 5. Said waste cock for convenience, is shown as a simple type of plug cook, the plug of which is engaged by a spring 6, which acts-at all times to hold the same seated to prevent leakage of the fluid therearound. 'A bracket or arm 7, is secured. on said boss 3. and is adapted for attachment to any suitable support to carry the Weight of the device independently of the gasolenc supply line.

Extending into the cylindric bore in the upper part of the casing, is a. strainer head 8, which its closely in said bore at its bottom and is provided with a downwardly directed flange 9, around its periphery, across which is secured by soldering or other suitable means, a fine metal, gauze strainer 10. integrally connected with said strainer head, is an upwardly directed, tubular stem 11, which opens through said head, and is provided with oppositely directed apertures 12, therein opening into the upper chamber afforded by the cylindric bored portion of the casing, and, asv shown, a cover cap 13, integral with the stem 11, seats upon a. packing washer 14, of any suitable material on the upper end of the casing, to seal the same, as shown in Fig. 1. A clamp 15, engages beneath a peripheral flange 16, at the top of said casing, andisprovidcd with a central pressure screw 17, which bears on said head or cover plate 13, and acts to hold the same firmly seated at all times to close said upper chamber.

An internally threaded passage 18, is pro vided in one side of the casing, and con venientlya little above the strainer head, as shown in Fig. 1, and extends downwardly into the lower or collecting chamber, and" threaded thereinto, is a pipe or nipple 19, adapted to be connected by means of any suitable union 20, with the gasolene supply pipe leading from the supply tank. Opening into the upper chamber substantially opposite the passage 18, isa passage 21, and threaded therein is a nipple or connection 22, adapted to'aiiord connectionby means of a suitable union 23, with that portion of the su ply pipe leading to the carbureter.

he operation is as follows: The gasolene or other fluid from the source of supply, is admitted through the passage 18, into the lower or collecting chamber and filling the same, the gasolene or other fluid (which is lighter than any Water'contained therein) passes upwardly through the screen 10, through the passage in the stem, through the lateral apertures 12, and substantially fills the upper chamber and flows therefrom to the carbureter. throughthe nipple or pipe lower compartment.

23, and its connections. 'Any dirt or refuse is arrested by the screen, and, owing to the relatively large size of the collecting chamber or trap, soon falls to the bottom of the This is facilitated owing to the fact that the strainer affords a large surface for the flow of the gasolene therethrbugh, and the flow is' not concentrated at any one point thereon. In consequence, the upward pressure and flow through the screen at any point, is not suflicient to force the dirt therethrough, even though the dirt be quite fine. The water, being heavier than the gasolene or other fuel oil, falls to the bottom of 'said compartment, and there remains until, together with the dirt and refuse collected .(if any),

it may be drained from said compartment by the opening of the waste cock 5.

Should it ever be deemed desirable to. inspect the interior of the device, it may be readily accomplished Without disconnecting from the supply pipe by releasing the clamp 15, by the retraction of the screw 17. When this is done, the strainer head may be lifted from its chamber, afi'ording access to the in terior of the casing, and permitting inspection of all parts thereof, after which, of

course, the strainer head ts restored to place, and the clamp rengaged in lace, and the device is ready for .use as be ore described.

Details of the construction may, of course, be varied, as may the relative sizes oi? the chambers in the casing, and the particular connections described, for I have shown but ore (and that a preferred) form of the invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

1. A casing affording an upper chamber and a larger lower collecting chamber or trap, a dividing wall between said chambers, a peripheral, downwardly extending flange thereon, a fine wire gauze screen scoured on said flange below the dividing wall, a tubular stem connected in the dividing wall and ported to discharge into the upper chamber, a removable cover for the upper chamber, an induction pipe connected to discharge into the lower or collecting chamber, and an eduction pipe connected to discharge from the upper chamber.

2. A casing affording an induction chum-- her and an eduction chamber, a dividing wall between said chambers, a peripheral flange thereon, extending into thc induction chamber, a fine wire gauze screen securcd on said flange in the induction chamber, a pipe connected cc trally in said wall and porlcd to discharge nto the eduction chandler. a removable head or cover for the eduction chamber, aminduction pipe connected to disf charge into the induction chamber, and an eduction pipe connected to discharge from the eduction chamber.

3. In a device of the class described the combination with a casing affording a trap or collecting chamber, of an integral tangential induction passage communicating therein at its top, a downwardly facing strainer member comprising a flanged dish, a screen secured around the flange, a central apertured shank extending upwardly there from affording an eduction passage from said chamber, and a cover for the casing integral with said shank.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

CHARLES L. RAYFIELD.

Witnesses:

LAWRENCE Rnmsrnnv, GnononR. Moons. 

